GULF PETROLEUM 4

IMO 9439345

Vessel information

Vessel Name GULF PETROLEUM 4
IMO Number 9439345
MMSI 538011785
Vessel Type Tanker
Flag 🏳️ Marshall Is
Call Sign V7A3457
Length 129 m
Beam 23 m

Detected Events (100)

Zone Dwell Bosphorus/Dardanelles Approach
Aug 27, 2026 16:04 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 1h 10m
  • Data Points: 15 AIS positions
  • Period: 2026-08-27T16:04:24+00:00 to 2026-08-27T17:14:37+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 70.2000000000000028421709430404007434844970703125,
    "points_in_zone": 15,
    "first_point": {
        "ts": "2026-08-27T16:04:24+00:00",
        "lat": 40.8076233000000030415321816690266132354736328125,
        "lon": 28.997273299999999807141648489050567150115966796875
    },
    "last_point": {
        "ts": "2026-08-27T17:14:37+00:00",
        "lat": 40.98351000000000254885890171863138675689697265625,
        "lon": 28.99832669999999978927007759921252727508544921875
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 27, 2026 15:53 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 1h 21m
  • Data Points: 16 AIS positions
  • Period: 2026-08-27T15:53:35+00:00 to 2026-08-27T17:14:37+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 81,
    "points_in_zone": 16,
    "first_point": {
        "ts": "2026-08-27T15:53:35+00:00",
        "lat": 40.790971700000000055297277867794036865234375,
        "lon": 29.004883299999999479723555850796401500701904296875
    },
    "last_point": {
        "ts": "2026-08-27T17:14:37+00:00",
        "lat": 40.98351000000000254885890171863138675689697265625,
        "lon": 28.99832669999999978927007759921252727508544921875
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 27, 2026 14:33 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 2h 41m
  • Data Points: 20 AIS positions
  • Period: 2026-08-27T14:33:25+00:00 to 2026-08-27T17:14:37+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 161.19999999999998863131622783839702606201171875,
    "points_in_zone": 20,
    "first_point": {
        "ts": "2026-08-27T14:33:25+00:00",
        "lat": 40.79943999999999704186848248355090618133544921875,
        "lon": 29.01888999999999896317603997886180877685546875
    },
    "last_point": {
        "ts": "2026-08-27T17:14:37+00:00",
        "lat": 40.98351000000000254885890171863138675689697265625,
        "lon": 28.99832669999999978927007759921252727508544921875
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Bosphorus/Dardanelles Approach
Aug 24, 2026 02:12 UTC 75/100
Vessel A: IMO 9439345 (GULF PETROLEUM 4) Marshall Is
Vessel B: RIKER (RIKER) SIERRA LEONE
  • Minimum Distance: 187 meters
  • Average Distance: 189 meters
  • Duration: 54 minutes
  • Period: 2026-08-24T02:12:15+00:00 to 2026-08-24T03:06:15+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 75/100

Moderate-confidence STS candidate. Two tankers (GULF PETROLEUM 4 and RIKER) maintained close proximity (min 187m, avg 189m) for 54 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness20/25Min distance 187m, avg 189m
Duration10/25Duration 54 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-08-24T08:15:04.197776+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538011785,
        "imo": 9439345,
        "name": "GULF PETROLEUM 4",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 667002011,
        "imo": 9253909,
        "name": "RIKER",
        "flag": "SIERRA LEONE"
    },
    "min_distance_m": 187,
    "avg_distance_m": 189.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 1.5,
    "duration_minutes": 54,
    "overlap_duration_s": 3240,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-08-24T02:12:15+00:00",
        "end": "2026-08-24T03:06:15+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 75,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 187m, avg 189m"
            },
            "duration": {
                "score": 10,
                "max": 25,
                "detail": "Duration 54 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (GULF PETROLEUM 4 and RIKER) maintained close proximity (min 187m, avg 189m) for 54 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.70278400000000118552634376101195812225341796875,
            "lon": 29.459842900000001719718056847341358661651611328125
        },
        "time_window": {
            "start_ts": "2026-08-24T02:12:15+00:00",
            "end_ts": "2026-08-24T03:06:15+00:00"
        },
        "searched_at": "2026-08-24T08:15:04.197776+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 24, 2026 02:00 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 1h 12m
  • Data Points: 7 AIS positions
  • Period: 2026-08-24T02:00:14+00:00 to 2026-08-24T03:12:16+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 72,
    "points_in_zone": 7,
    "first_point": {
        "ts": "2026-08-24T02:00:14+00:00",
        "lat": 40.70355500000000148475010064430534839630126953125,
        "lon": 29.460286700000001047783371177501976490020751953125
    },
    "last_point": {
        "ts": "2026-08-24T03:12:16+00:00",
        "lat": 40.70355330000000293466655421070754528045654296875,
        "lon": 29.46027169999999983929228619672358036041259765625
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 24, 2026 01:21 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 1h 51m
  • Data Points: 14 AIS positions
  • Period: 2026-08-24T01:21:14+00:00 to 2026-08-24T03:12:16+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 111,
    "points_in_zone": 14,
    "first_point": {
        "ts": "2026-08-24T01:21:14+00:00",
        "lat": 40.70355500000000148475010064430534839630126953125,
        "lon": 29.460300000000000153477230924181640148162841796875
    },
    "last_point": {
        "ts": "2026-08-24T03:12:16+00:00",
        "lat": 40.70355330000000293466655421070754528045654296875,
        "lon": 29.46027169999999983929228619672358036041259765625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 24, 2026 01:21 UTC 75.0%
  • Duration: 1h 51m
  • Radius: 4 meters
  • Data Points: 14 AIS positions
  • Centroid: 40.7036, 29.4603
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 4.0999999999999996447286321199499070644378662109375,
    "duration_minutes": 111,
    "points": 14,
    "centroid": {
        "lat": 40.70355917142857293811175622977316379547119140625,
        "lon": 29.46028631428571742389976861886680126190185546875
    },
    "bbox": {
        "min_lat": 40.70354499999999831061359145678579807281494140625,
        "min_lon": 29.460260000000001667785909376107156276702880859375,
        "max_lat": 40.70358999999999838337316759862005710601806640625,
        "max_lon": 29.460305000000001740545485517941415309906005859375
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts🛰️✗ Bosphorus/Dardanelles Approach
Aug 24, 2026 01:15 UTC 70/100
Vessel A: IMO 9016454 (KAROL WOJTYLA) TANZANIA
Vessel B: IMO 9439345 (GULF PETROLEUM 4) Marshall Is
  • Minimum Distance: 454 meters
  • Average Distance: 456 meters
  • Duration: 1h 44m
  • Period: 2026-08-24T01:15:34+00:00 to 2026-08-24T03:00:14+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 70/100

Moderate-confidence STS candidate. Two tankers (KAROL WOJTYLA and GULF PETROLEUM 4) maintained close proximity (min 454m, avg 456m) for 105 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 454m, avg 456m
Duration20/25Duration 105 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±1m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-08-24T03:15:01.544815+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 677045600,
        "imo": 9016454,
        "name": "KAROL WOJTYLA",
        "flag": "TANZANIA"
    },
    "vessel_b": {
        "mmsi": 538011785,
        "imo": 9439345,
        "name": "GULF PETROLEUM 4",
        "flag": "Marshall Is"
    },
    "min_distance_m": 453.69999999999998863131622783839702606201171875,
    "avg_distance_m": 455.6000000000000227373675443232059478759765625,
    "distance_consistency_m": 1,
    "duration_minutes": 104.7000000000000028421709430404007434844970703125,
    "overlap_duration_s": 6280,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-08-24T01:15:34+00:00",
        "end": "2026-08-24T03:00:14+00:00"
    },
    "points_count": {
        "vessel_a": 8,
        "vessel_b": 8
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 454m, avg 456m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 105 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (KAROL WOJTYLA and GULF PETROLEUM 4) maintained close proximity (min 454m, avg 456m) for 105 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.70256299999999782812665216624736785888671875,
            "lon": 29.462651699999998555767888319678604602813720703125
        },
        "time_window": {
            "start_ts": "2026-08-24T01:15:34+00:00",
            "end_ts": "2026-08-24T03:00:14+00:00"
        },
        "searched_at": "2026-08-24T03:15:01.544815+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts Bosphorus/Dardanelles Approach
Aug 24, 2026 01:12 UTC 85/100
Vessel A: RIKER (RIKER) SIERRA LEONE
Vessel B: IMO 9439345 (GULF PETROLEUM 4) Marshall Is
  • Minimum Distance: 186 meters
  • Average Distance: 189 meters
  • Duration: 1h 57m
  • Period: 2026-08-24T01:12:04+00:00 to 2026-08-24T03:09:04+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (RIKER and GULF PETROLEUM 4) maintained close proximity (min 186m, avg 189m) for 117 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness20/25Min distance 186m, avg 189m
Duration20/25Duration 117 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 667002011,
        "imo": 9253909,
        "name": "RIKER",
        "flag": "SIERRA LEONE"
    },
    "vessel_b": {
        "mmsi": 538011785,
        "imo": 9439345,
        "name": "GULF PETROLEUM 4",
        "flag": "Marshall Is"
    },
    "min_distance_m": 186,
    "avg_distance_m": 188.900000000000005684341886080801486968994140625,
    "distance_consistency_m": 1.600000000000000088817841970012523233890533447265625,
    "duration_minutes": 117,
    "overlap_duration_s": 7020,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-08-24T01:12:04+00:00",
        "end": "2026-08-24T03:09:04+00:00"
    },
    "points_count": {
        "vessel_a": 9,
        "vessel_b": 9
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 186m, avg 189m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 117 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (RIKER and GULF PETROLEUM 4) maintained close proximity (min 186m, avg 189m) for 117 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Bosphorus/Dardanelles Approach
Aug 24, 2026 00:09 UTC 80/100
Vessel A: IMO 9439345 (GULF PETROLEUM 4) Marshall Is
Vessel B: RIKER (RIKER) SIERRA LEONE
  • Minimum Distance: 187 meters
  • Average Distance: 189 meters
  • Duration: 1h 27m
  • Period: 2026-08-24T00:09:13+00:00 to 2026-08-24T01:36:14+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (GULF PETROLEUM 4 and RIKER) maintained close proximity (min 187m, avg 189m) for 87 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness20/25Min distance 187m, avg 189m
Duration15/25Duration 87 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-08-24T03:15:09.807613+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538011785,
        "imo": 9439345,
        "name": "GULF PETROLEUM 4",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 667002011,
        "imo": 9253909,
        "name": "RIKER",
        "flag": "SIERRA LEONE"
    },
    "min_distance_m": 186.900000000000005684341886080801486968994140625,
    "avg_distance_m": 189.400000000000005684341886080801486968994140625,
    "distance_consistency_m": 1.8000000000000000444089209850062616169452667236328125,
    "duration_minutes": 87,
    "overlap_duration_s": 5221,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-08-24T00:09:13+00:00",
        "end": "2026-08-24T01:36:14+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 187m, avg 189m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 87 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (GULF PETROLEUM 4 and RIKER) maintained close proximity (min 187m, avg 189m) for 87 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.702768399999996518090483732521533966064453125,
            "lon": 29.45984179999999952315192786045372486114501953125
        },
        "time_window": {
            "start_ts": "2026-08-24T00:09:13+00:00",
            "end_ts": "2026-08-24T01:36:14+00:00"
        },
        "searched_at": "2026-08-24T03:15:09.807613+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Bosphorus/Dardanelles Approach
Aug 24, 2026 00:09 UTC 70/100
Vessel A: IMO 9439345 (GULF PETROLEUM 4) Marshall Is
Vessel B: IMO 9016454 (KAROL WOJTYLA) TANZANIA
  • Minimum Distance: 454 meters
  • Average Distance: 456 meters
  • Duration: 1h 39m
  • Period: 2026-08-24T00:09:13+00:00 to 2026-08-24T01:48:14+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 70/100

Moderate-confidence STS candidate. Two tankers (GULF PETROLEUM 4 and KAROL WOJTYLA) maintained close proximity (min 454m, avg 456m) for 99 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 454m, avg 456m
Duration20/25Duration 99 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±1m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-08-24T03:30:05.367578+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538011785,
        "imo": 9439345,
        "name": "GULF PETROLEUM 4",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 677045600,
        "imo": 9016454,
        "name": "KAROL WOJTYLA",
        "flag": "TANZANIA"
    },
    "min_distance_m": 453.69999999999998863131622783839702606201171875,
    "avg_distance_m": 455.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 1.100000000000000088817841970012523233890533447265625,
    "duration_minutes": 99,
    "overlap_duration_s": 5941,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-08-24T00:09:13+00:00",
        "end": "2026-08-24T01:48:14+00:00"
    },
    "points_count": {
        "vessel_a": 8,
        "vessel_b": 8
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 70,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 454m, avg 456m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 99 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (GULF PETROLEUM 4 and KAROL WOJTYLA) maintained close proximity (min 454m, avg 456m) for 99 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.702564399999999977808329276740550994873046875,
            "lon": 29.4626516000000009398718248121440410614013671875
        },
        "time_window": {
            "start_ts": "2026-08-24T00:09:13+00:00",
            "end_ts": "2026-08-24T01:48:14+00:00"
        },
        "searched_at": "2026-08-24T03:30:05.367578+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 24, 2026 00:09 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 3h 3m
  • Data Points: 16 AIS positions
  • Period: 2026-08-24T00:09:13+00:00 to 2026-08-24T03:12:16+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 183.099999999999994315658113919198513031005859375,
    "points_in_zone": 16,
    "first_point": {
        "ts": "2026-08-24T00:09:13+00:00",
        "lat": 40.70354999999999989768184605054557323455810546875,
        "lon": 29.46030830000000122481651487760245800018310546875
    },
    "last_point": {
        "ts": "2026-08-24T03:12:16+00:00",
        "lat": 40.70355330000000293466655421070754528045654296875,
        "lon": 29.46027169999999983929228619672358036041259765625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 24, 2026 00:09 UTC 75.0%
  • Duration: 3h 3m
  • Radius: 4 meters
  • Data Points: 16 AIS positions
  • Centroid: 40.7036, 29.4603
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 4.29999999999999982236431605997495353221893310546875,
    "duration_minutes": 183.099999999999994315658113919198513031005859375,
    "points": 16,
    "centroid": {
        "lat": 40.7035577125000003206878318451344966888427734375,
        "lon": 29.460287187499996974793248227797448635101318359375
    },
    "bbox": {
        "min_lat": 40.70354499999999831061359145678579807281494140625,
        "min_lon": 29.460260000000001667785909376107156276702880859375,
        "max_lat": 40.70358999999999838337316759862005710601806640625,
        "max_lon": 29.46030830000000122481651487760245800018310546875
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 23, 2026 23:06 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 4h 6m
  • Data Points: 18 AIS positions
  • Period: 2026-08-23T23:06:14+00:00 to 2026-08-24T03:12:16+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 246,
    "points_in_zone": 18,
    "first_point": {
        "ts": "2026-08-23T23:06:14+00:00",
        "lat": 40.7035350000000022419044398702681064605712890625,
        "lon": 29.460280000000000910631570150144398212432861328125
    },
    "last_point": {
        "ts": "2026-08-24T03:12:16+00:00",
        "lat": 40.70355330000000293466655421070754528045654296875,
        "lon": 29.46027169999999983929228619672358036041259765625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 23, 2026 23:06 UTC 75.0%
  • Duration: 4h 6m
  • Radius: 5 meters
  • Data Points: 18 AIS positions
  • Centroid: 40.7036, 29.4603
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 4.5,
    "duration_minutes": 246,
    "points": 18,
    "centroid": {
        "lat": 40.703555005555557499974383972585201263427734375,
        "lon": 29.460286666666661403723992407321929931640625
    },
    "bbox": {
        "min_lat": 40.7035316999999992049197317101061344146728515625,
        "min_lon": 29.460260000000001667785909376107156276702880859375,
        "max_lat": 40.70358999999999838337316759862005710601806640625,
        "max_lon": 29.46030830000000122481651487760245800018310546875
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 23, 2026 22:42 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 4h 30m
  • Data Points: 21 AIS positions
  • Period: 2026-08-23T22:42:13+00:00 to 2026-08-24T03:12:16+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 270.1000000000000227373675443232059478759765625,
    "points_in_zone": 21,
    "first_point": {
        "ts": "2026-08-23T22:42:13+00:00",
        "lat": 40.7035417000000023790562408976256847381591796875,
        "lon": 29.460286700000001047783371177501976490020751953125
    },
    "last_point": {
        "ts": "2026-08-24T03:12:16+00:00",
        "lat": 40.70355330000000293466655421070754528045654296875,
        "lon": 29.46027169999999983929228619672358036041259765625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 23, 2026 22:42 UTC 75.0%
  • Duration: 4h 30m
  • Radius: 5 meters
  • Data Points: 21 AIS positions
  • Centroid: 40.7036, 29.4603
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 4.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 270.1000000000000227373675443232059478759765625,
    "points": 21,
    "centroid": {
        "lat": 40.70355325714286465199620579369366168975830078125,
        "lon": 29.4602855571428534631195361725986003875732421875
    },
    "bbox": {
        "min_lat": 40.7035316999999992049197317101061344146728515625,
        "min_lon": 29.460260000000001667785909376107156276702880859375,
        "max_lat": 40.70358999999999838337316759862005710601806640625,
        "max_lon": 29.46030830000000122481651487760245800018310546875
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts🛰️✗ Bosphorus/Dardanelles Approach
Aug 23, 2026 21:54 UTC 65/100
Vessel A: IMO 9439345 (GULF PETROLEUM 4) Marshall Is
Vessel B: IMO 9016454 (KAROL WOJTYLA) TANZANIA
  • Minimum Distance: 456 meters
  • Average Distance: 457 meters
  • Duration: 1h 12m
  • Period: 2026-08-23T21:54:12+00:00 to 2026-08-23T23:06:14+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (GULF PETROLEUM 4 and KAROL WOJTYLA) maintained close proximity (min 456m, avg 457m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 456m, avg 457m
Duration15/25Duration 72 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±1m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-08-24T03:30:02.207381+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538011785,
        "imo": 9439345,
        "name": "GULF PETROLEUM 4",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 677045600,
        "imo": 9016454,
        "name": "KAROL WOJTYLA",
        "flag": "TANZANIA"
    },
    "min_distance_m": 455.69999999999998863131622783839702606201171875,
    "avg_distance_m": 457,
    "distance_consistency_m": 1.3000000000000000444089209850062616169452667236328125,
    "duration_minutes": 72,
    "overlap_duration_s": 4322,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-08-23T21:54:12+00:00",
        "end": "2026-08-23T23:06:14+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 456m, avg 457m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 72 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (GULF PETROLEUM 4 and KAROL WOJTYLA) maintained close proximity (min 456m, avg 457m) for 72 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.70254680000000035988705349154770374298095703125,
            "lon": 29.462648200000000286991053144447505474090576171875
        },
        "time_window": {
            "start_ts": "2026-08-23T21:54:12+00:00",
            "end_ts": "2026-08-23T23:06:14+00:00"
        },
        "searched_at": "2026-08-24T03:30:02.207381+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Sts🛰️✗ Bosphorus/Dardanelles Approach
Aug 23, 2026 21:18 UTC 85/100
Vessel A: IMO 9439345 (GULF PETROLEUM 4) Marshall Is
Vessel B: RIKER (RIKER) SIERRA LEONE
  • Minimum Distance: 185 meters
  • Average Distance: 187 meters
  • Duration: 1h 48m
  • Period: 2026-08-23T21:18:12+00:00 to 2026-08-23T23:06:14+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 85/100

High-confidence STS candidate. Two tankers (GULF PETROLEUM 4 and RIKER) maintained close proximity (min 185m, avg 187m) for 108 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness20/25Min distance 185m, avg 187m
Duration20/25Duration 108 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±2m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-08-24T03:15:07.360715+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538011785,
        "imo": 9439345,
        "name": "GULF PETROLEUM 4",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 667002011,
        "imo": 9253909,
        "name": "RIKER",
        "flag": "SIERRA LEONE"
    },
    "min_distance_m": 184.69999999999998863131622783839702606201171875,
    "avg_distance_m": 186.69999999999998863131622783839702606201171875,
    "distance_consistency_m": 2,
    "duration_minutes": 108,
    "overlap_duration_s": 6482,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-08-23T21:18:12+00:00",
        "end": "2026-08-23T23:06:14+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 85,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 185m, avg 187m"
            },
            "duration": {
                "score": 20,
                "max": 25,
                "detail": "Duration 108 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b12m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (GULF PETROLEUM 4 and RIKER) maintained close proximity (min 185m, avg 187m) for 108 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.70277569999999656147338100709021091461181640625,
            "lon": 29.459842200000000644877218292094767093658447265625
        },
        "time_window": {
            "start_ts": "2026-08-23T21:18:12+00:00",
            "end_ts": "2026-08-23T23:06:14+00:00"
        },
        "searched_at": "2026-08-24T03:15:07.360715+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 23, 2026 21:18 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 5h 54m
  • Data Points: 24 AIS positions
  • Period: 2026-08-23T21:18:12+00:00 to 2026-08-24T03:12:16+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 354.1000000000000227373675443232059478759765625,
    "points_in_zone": 24,
    "first_point": {
        "ts": "2026-08-23T21:18:12+00:00",
        "lat": 40.70355670000000003483364707790315151214599609375,
        "lon": 29.460305000000001740545485517941415309906005859375
    },
    "last_point": {
        "ts": "2026-08-24T03:12:16+00:00",
        "lat": 40.70355330000000293466655421070754528045654296875,
        "lon": 29.46027169999999983929228619672358036041259765625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 23, 2026 21:18 UTC 75.0%
  • Duration: 5h 54m
  • Radius: 5 meters
  • Data Points: 24 AIS positions
  • Centroid: 40.7036, 29.4603
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 4.70000000000000017763568394002504646778106689453125,
    "duration_minutes": 354.1000000000000227373675443232059478759765625,
    "points": 24,
    "centroid": {
        "lat": 40.70355305833333403597862343303859233856201171875,
        "lon": 29.460286808333332686515859677456319332122802734375
    },
    "bbox": {
        "min_lat": 40.7035316999999992049197317101061344146728515625,
        "min_lon": 29.460260000000001667785909376107156276702880859375,
        "max_lat": 40.70358999999999838337316759862005710601806640625,
        "max_lon": 29.46030830000000122481651487760245800018310546875
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts Bosphorus/Dardanelles Approach
Aug 23, 2026 20:51 UTC 80/100
Vessel A: RIKER (RIKER) SIERRA LEONE
Vessel B: IMO 9439345 (GULF PETROLEUM 4) Marshall Is
  • Minimum Distance: 186 meters
  • Average Distance: 188 meters
  • Duration: 1h 3m
  • Period: 2026-08-23T20:51:03+00:00 to 2026-08-23T21:54:03+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 80/100

High-confidence STS candidate. Two tankers (RIKER and GULF PETROLEUM 4) maintained close proximity (min 186m, avg 188m) for 63 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness20/25Min distance 186m, avg 188m
Duration15/25Duration 63 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±1m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 667002011,
        "imo": 9253909,
        "name": "RIKER",
        "flag": "SIERRA LEONE"
    },
    "vessel_b": {
        "mmsi": 538011785,
        "imo": 9439345,
        "name": "GULF PETROLEUM 4",
        "flag": "Marshall Is"
    },
    "min_distance_m": 185.80000000000001136868377216160297393798828125,
    "avg_distance_m": 187.900000000000005684341886080801486968994140625,
    "distance_consistency_m": 1.3000000000000000444089209850062616169452667236328125,
    "duration_minutes": 63,
    "overlap_duration_s": 3780,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-08-23T20:51:03+00:00",
        "end": "2026-08-23T21:54:03+00:00"
    },
    "points_count": {
        "vessel_a": 7,
        "vessel_b": 7
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 80,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 186m, avg 188m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 63 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (RIKER and GULF PETROLEUM 4) maintained close proximity (min 186m, avg 188m) for 63 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}
Methodology: 2026.01.18
Sts Bosphorus/Dardanelles Approach
Aug 23, 2026 20:47 UTC 65/100
Vessel A: IMO 9016454 (KAROL WOJTYLA) TANZANIA
Vessel B: IMO 9439345 (GULF PETROLEUM 4) Marshall Is
  • Minimum Distance: 455 meters
  • Average Distance: 456 meters
  • Duration: 1h 16m
  • Period: 2026-08-23T20:47:35+00:00 to 2026-08-23T22:03:55+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 65/100

Moderate-confidence STS candidate. Two tankers (KAROL WOJTYLA and GULF PETROLEUM 4) maintained close proximity (min 455m, avg 456m) for 76 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness5/25Min distance 455m, avg 456m
Duration15/25Duration 76 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±1m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 677045600,
        "imo": 9016454,
        "name": "KAROL WOJTYLA",
        "flag": "TANZANIA"
    },
    "vessel_b": {
        "mmsi": 538011785,
        "imo": 9439345,
        "name": "GULF PETROLEUM 4",
        "flag": "Marshall Is"
    },
    "min_distance_m": 454.80000000000001136868377216160297393798828125,
    "avg_distance_m": 456,
    "distance_consistency_m": 0.8000000000000000444089209850062616169452667236328125,
    "duration_minutes": 76.2999999999999971578290569595992565155029296875,
    "overlap_duration_s": 4580,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-08-23T20:47:35+00:00",
        "end": "2026-08-23T22:03:55+00:00"
    },
    "points_count": {
        "vessel_a": 5,
        "vessel_b": 5
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 65,
        "components": {
            "distance_tightness": {
                "score": 5,
                "max": 25,
                "detail": "Min distance 455m, avg 456m"
            },
            "duration": {
                "score": 15,
                "max": 25,
                "detail": "Duration 76 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "Moderate-confidence STS candidate. Two tankers (KAROL WOJTYLA and GULF PETROLEUM 4) maintained close proximity (min 455m, avg 456m) for 76 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 23, 2026 20:45 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 6h 27m
  • Data Points: 26 AIS positions
  • Period: 2026-08-23T20:45:09+00:00 to 2026-08-24T03:12:16+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 387.1000000000000227373675443232059478759765625,
    "points_in_zone": 26,
    "first_point": {
        "ts": "2026-08-23T20:45:09+00:00",
        "lat": 40.703568300000000590443960390985012054443359375,
        "lon": 29.4602849999999989449861459434032440185546875
    },
    "last_point": {
        "ts": "2026-08-24T03:12:16+00:00",
        "lat": 40.70355330000000293466655421070754528045654296875,
        "lon": 29.46027169999999983929228619672358036041259765625
    }
}
Methodology: 2026.01.18
Loiter Bosphorus/Dardanelles Approach
Aug 23, 2026 20:45 UTC 75.0%
  • Duration: 6h 27m
  • Radius: 5 meters
  • Data Points: 26 AIS positions
  • Centroid: 40.7036, 29.4603
  • Zone: Bosphorus/Dardanelles Approach
Show Raw Evidence JSON
{
    "radius_m": 4.5999999999999996447286321199499070644378662109375,
    "duration_minutes": 387.1000000000000227373675443232059478759765625,
    "points": 26,
    "centroid": {
        "lat": 40.70355365384614998447432299144566059112548828125,
        "lon": 29.4602869884615330420274403877556324005126953125
    },
    "bbox": {
        "min_lat": 40.7035316999999992049197317101061344146728515625,
        "min_lon": 29.460260000000001667785909376107156276702880859375,
        "max_lat": 40.70358999999999838337316759862005710601806640625,
        "max_lon": 29.46030830000000122481651487760245800018310546875
    },
    "zone_id": "osint_bosphorus"
}
Methodology: 2026.01.18
Sts🛰️✗ Bosphorus/Dardanelles Approach
Aug 22, 2026 19:35 UTC 90/100
Vessel A: IMO 9439345 (GULF PETROLEUM 4) Marshall Is
Vessel B: RIKER (RIKER) SIERRA LEONE
  • Minimum Distance: 183 meters
  • Average Distance: 184 meters
  • Duration: 3h 18m
  • Period: 2026-08-22T19:35:57+00:00 to 2026-08-22T22:53:58+00:00
  • Vessel A Avg Speed: 0.0 knots
  • Vessel B Avg Speed: 0.0 knots
  • Zone: Bosphorus/Dardanelles Approach

Confidence Analysis

Score: 90/100

High-confidence STS candidate. Two tankers (GULF PETROLEUM 4 and RIKER) maintained close proximity (min 183m, avg 184m) for 198 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus/Dardanelles Approach, a known STS activity area.

View scoring breakdown
FactorScoreDetail
Distance Tightness20/25Min distance 183m, avg 184m
Duration25/25Duration 198 minutes
Speed Stability20/20both nearly stationary; very stable speeds
Distance Consistency15/15Distance variance ±1m
Isolation5/10Isolation data not available
Context5/5In monitored zone: Bosphorus/Dardanelles Approach

🛰️ Satellite Corroboration

SAR Not Available

No satellite imagery for this time/location

No Sentinel-1 scenes covering AOI and time window

Searched: 2026-08-23T01:30:03.847203+00:00

Show Raw Evidence JSON
{
    "vessel_a": {
        "mmsi": 538011785,
        "imo": 9439345,
        "name": "GULF PETROLEUM 4",
        "flag": "Marshall Is"
    },
    "vessel_b": {
        "mmsi": 667002011,
        "imo": 9253909,
        "name": "RIKER",
        "flag": "SIERRA LEONE"
    },
    "min_distance_m": 183.30000000000001136868377216160297393798828125,
    "avg_distance_m": 184.19999999999998863131622783839702606201171875,
    "distance_consistency_m": 1.1999999999999999555910790149937383830547332763671875,
    "duration_minutes": 198,
    "overlap_duration_s": 11881,
    "speed_a_avg": 0,
    "speed_a_std": 0,
    "speed_b_avg": 0,
    "speed_b_std": 0,
    "speed_summary": {
        "vessel_a": {
            "avg_sog": 0,
            "max_sog": 0
        },
        "vessel_b": {
            "avg_sog": 0,
            "max_sog": 0
        }
    },
    "time_window": {
        "start": "2026-08-22T19:35:57+00:00",
        "end": "2026-08-22T22:53:58+00:00"
    },
    "points_count": {
        "vessel_a": 2,
        "vessel_b": 2
    },
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "score": {
        "value": 90,
        "components": {
            "distance_tightness": {
                "score": 20,
                "max": 25,
                "detail": "Min distance 183m, avg 184m"
            },
            "duration": {
                "score": 25,
                "max": 25,
                "detail": "Duration 198 minutes"
            },
            "speed_stability": {
                "score": 20,
                "max": 20,
                "detail": "both nearly stationary; very stable speeds"
            },
            "distance_consistency": {
                "score": 15,
                "max": 15,
                "detail": "Distance variance \u00b11m"
            },
            "isolation": {
                "score": 5,
                "max": 10,
                "detail": "Isolation data not available"
            },
            "context": {
                "score": 5,
                "max": 5,
                "detail": "In monitored zone: Bosphorus\/Dardanelles Approach"
            }
        },
        "summary": "High-confidence STS candidate. Two tankers (GULF PETROLEUM 4 and RIKER) maintained close proximity (min 183m, avg 184m) for 198 minutes. Both vessels were slow-moving (avg speeds 0.0 and 0.0 knots). The stable separation distance suggests deliberate parallel positioning typical of cargo transfer. Event occurred in Bosphorus\/Dardanelles Approach, a known STS activity area."
    },
    "sar": {
        "status": "not_found",
        "centroid": {
            "lat": 40.70278090000000048576112021692097187042236328125,
            "lon": 29.45984539999999896053850534372031688690185546875
        },
        "time_window": {
            "start_ts": "2026-08-22T19:35:57+00:00",
            "end_ts": "2026-08-22T22:53:58+00:00"
        },
        "searched_at": "2026-08-23T01:30:03.847203+00:00",
        "notes": "No Sentinel-1 scenes covering AOI and time window"
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 22, 2026 19:11 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 3h 42m
  • Data Points: 3 AIS positions
  • Period: 2026-08-22T19:11:58+00:00 to 2026-08-22T22:53:58+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 222,
    "points_in_zone": 3,
    "first_point": {
        "ts": "2026-08-22T19:11:58+00:00",
        "lat": 40.70353329999999658639353583566844463348388671875,
        "lon": 29.4602849999999989449861459434032440185546875
    },
    "last_point": {
        "ts": "2026-08-22T22:53:58+00:00",
        "lat": 40.70355169999999844776539248414337635040283203125,
        "lon": 29.460273300000000773479769122786819934844970703125
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 22, 2026 16:05 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 3h 30m
  • Data Points: 3 AIS positions
  • Period: 2026-08-22T16:05:55+00:00 to 2026-08-22T19:35:57+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 210,
    "points_in_zone": 3,
    "first_point": {
        "ts": "2026-08-22T16:05:55+00:00",
        "lat": 40.703609999999997626218828372657299041748046875,
        "lon": 29.460248299999999943565853754989802837371826171875
    },
    "last_point": {
        "ts": "2026-08-22T19:35:57+00:00",
        "lat": 40.7035316999999992049197317101061344146728515625,
        "lon": 29.4602849999999989449861459434032440185546875
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 22, 2026 15:41 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 3h 54m
  • Data Points: 5 AIS positions
  • Period: 2026-08-22T15:41:54+00:00 to 2026-08-22T19:35:57+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 234.099999999999994315658113919198513031005859375,
    "points_in_zone": 5,
    "first_point": {
        "ts": "2026-08-22T15:41:54+00:00",
        "lat": 40.7035699999999991405275068245828151702880859375,
        "lon": 29.460249999999998493649400188587605953216552734375
    },
    "last_point": {
        "ts": "2026-08-22T19:35:57+00:00",
        "lat": 40.7035316999999992049197317101061344146728515625,
        "lon": 29.4602849999999989449861459434032440185546875
    }
}
Methodology: 2026.01.18
Zone Dwell Bosphorus/Dardanelles Approach
Aug 22, 2026 14:47 UTC 80.0%
  • Zone: Bosphorus/Dardanelles Approach
  • Duration: 4h 48m
  • Data Points: 6 AIS positions
  • Period: 2026-08-22T14:47:53+00:00 to 2026-08-22T19:35:57+00:00
Show Raw Evidence JSON
{
    "zone_id": "osint_bosphorus",
    "zone_name": "Bosphorus\/Dardanelles Approach",
    "dwell_minutes": 288.1000000000000227373675443232059478759765625,
    "points_in_zone": 6,
    "first_point": {
        "ts": "2026-08-22T14:47:53+00:00",
        "lat": 40.70358329999999824622136657126247882843017578125,
        "lon": 29.46026669999999825222403160296380519866943359375
    },
    "last_point": {
        "ts": "2026-08-22T19:35:57+00:00",
        "lat": 40.7035316999999992049197317101061344146728515625,
        "lon": 29.4602849999999989449861459434032440185546875
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_162
Jul 30, 2026 17:00 UTC 80.0%
  • Zone: discovered_162
  • Duration: 2h 7m
  • Data Points: 36 AIS positions
  • Period: 2026-07-30T17:00:10+00:00 to 2026-07-30T19:07:33+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_162",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 127.400000000000005684341886080801486968994140625,
    "points_in_zone": 36,
    "first_point": {
        "ts": "2026-07-30T17:00:10+00:00",
        "lat": 35.92990669999999653327904525212943553924560546875,
        "lon": 16.32564500000000151658241520635783672332763671875
    },
    "last_point": {
        "ts": "2026-07-30T19:07:33+00:00",
        "lat": 35.93192830000000270729287876747548580169677734375,
        "lon": 16.734808300000000969021130003966391086578369140625
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_162
Jul 30, 2026 16:02 UTC 80.0%
  • Zone: discovered_162
  • Duration: 3h 5m
  • Data Points: 48 AIS positions
  • Period: 2026-07-30T16:02:01+00:00 to 2026-07-30T19:07:33+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_162",
    "zone_name": "Black Sea Sanctioned Vessel Monitoring Zone",
    "dwell_minutes": 185.5,
    "points_in_zone": 48,
    "first_point": {
        "ts": "2026-07-30T16:02:01+00:00",
        "lat": 35.92543830000000326663212035782635211944580078125,
        "lon": 16.134724999999999539568307227455079555511474609375
    },
    "last_point": {
        "ts": "2026-07-30T19:07:33+00:00",
        "lat": 35.93192830000000270729287876747548580169677734375,
        "lon": 16.734808300000000969021130003966391086578369140625
    }
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Jul 30, 2026 14:04 UTC 80.0%
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 1h 2m
  • Data Points: 19 AIS positions
  • Period: 2026-07-30T14:04:39+00:00 to 2026-07-30T15:07:08+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 62.5,
    "points_in_zone": 19,
    "first_point": {
        "ts": "2026-07-30T14:04:39+00:00",
        "lat": 35.92362829999999718211256549693644046783447265625,
        "lon": 15.7431882999999999128704075701534748077392578125
    },
    "last_point": {
        "ts": "2026-07-30T15:07:08+00:00",
        "lat": 35.9223582999999990761352819390594959259033203125,
        "lon": 15.950926700000000124646248877979815006256103515625
    }
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Jul 30, 2026 13:09 UTC 80.0%
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 1h 57m
  • Data Points: 34 AIS positions
  • Period: 2026-07-30T13:09:27+00:00 to 2026-07-30T15:07:08+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 117.7000000000000028421709430404007434844970703125,
    "points_in_zone": 34,
    "first_point": {
        "ts": "2026-07-30T13:09:27+00:00",
        "lat": 35.92572169999999687206582166254520416259765625,
        "lon": 15.5564082999999993006667864392511546611785888671875
    },
    "last_point": {
        "ts": "2026-07-30T15:07:08+00:00",
        "lat": 35.9223582999999990761352819390594959259033203125,
        "lon": 15.950926700000000124646248877979815006256103515625
    }
}
Methodology: 2026.01.18
Zone Dwell Northern Baltic Sea Surveillance Zone
Jul 30, 2026 12:15 UTC 80.0%
  • Zone: Northern Baltic Sea Surveillance Zone
  • Duration: 2h 51m
  • Data Points: 43 AIS positions
  • Period: 2026-07-30T12:15:28+00:00 to 2026-07-30T15:07:08+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_039",
    "zone_name": "Northern Baltic Sea Surveillance Zone",
    "dwell_minutes": 171.69999999999998863131622783839702606201171875,
    "points_in_zone": 43,
    "first_point": {
        "ts": "2026-07-30T12:15:28+00:00",
        "lat": 35.9160432999999983394445735029876232147216796875,
        "lon": 15.3798799999999999954525264911353588104248046875
    },
    "last_point": {
        "ts": "2026-07-30T15:07:08+00:00",
        "lat": 35.9223582999999990761352819390594959259033203125,
        "lon": 15.950926700000000124646248877979815006256103515625
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 15, 2026 10:03 UTC 80.0%
  • Zone: discovered_204
  • Duration: 4h 57m
  • Data Points: 5 AIS positions
  • Period: 2026-07-15T10:03:29+00:00 to 2026-07-15T15:00:51+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 297.3999999999999772626324556767940521240234375,
    "points_in_zone": 5,
    "first_point": {
        "ts": "2026-07-15T10:03:29+00:00",
        "lat": 37.26435330000000334393917000852525234222412109375,
        "lon": 5.24912829999999974717184159089811146259307861328125
    },
    "last_point": {
        "ts": "2026-07-15T15:00:51+00:00",
        "lat": 37.07452500000000128466126625426113605499267578125,
        "lon": 5.21115830000000013200178727856837213039398193359375
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 15, 2026 08:04 UTC 80.0%
  • Zone: discovered_204
  • Duration: 6h 27m
  • Data Points: 3 AIS positions
  • Period: 2026-07-15T08:15:17+00:00 to 2026-07-15T14:42:42+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 387.3999999999999772626324556767940521240234375,
    "points_in_zone": 3,
    "first_point": {
        "ts": "2026-07-15T08:15:17+00:00",
        "lat": 37.26846669999999761557774036191403865814208984375,
        "lon": 5.24429669999999958918124320916831493377685546875
    },
    "last_point": {
        "ts": "2026-07-15T14:42:42+00:00",
        "lat": 37.11807999999999907458914094604551792144775390625,
        "lon": 5.22392330000000004730509317596442997455596923828125
    }
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 15, 2026 07:24 UTC 75.0%
  • Duration: 2h 39m
  • Radius: 473 meters
  • Data Points: 11 AIS positions
  • Centroid: 37.2680, 5.2463
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 472.5,
    "duration_minutes": 159.19999999999998863131622783839702606201171875,
    "points": 11,
    "centroid": {
        "lat": 37.267952445454540111313690431416034698486328125,
        "lon": 5.24628289090909039060761642758734524250030517578125
    },
    "bbox": {
        "min_lat": 37.26435330000000334393917000852525234222412109375,
        "min_lon": 5.24429669999999958918124320916831493377685546875,
        "max_lat": 37.26846669999999761557774036191403865814208984375,
        "max_lon": 5.24912829999999974717184159089811146259307861328125
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 15, 2026 07:01 UTC 80.0%
  • Zone: discovered_204
  • Duration: 3h 2m
  • Data Points: 13 AIS positions
  • Period: 2026-07-15T07:01:27+00:00 to 2026-07-15T10:03:29+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 182,
    "points_in_zone": 13,
    "first_point": {
        "ts": "2026-07-15T07:01:27+00:00",
        "lat": 37.2682367000000027701389626599848270416259765625,
        "lon": 5.25070830000000032811158234835602343082427978515625
    },
    "last_point": {
        "ts": "2026-07-15T10:03:29+00:00",
        "lat": 37.26435330000000334393917000852525234222412109375,
        "lon": 5.24912829999999974717184159089811146259307861328125
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 15, 2026 06:36 UTC 80.0%
  • Zone: discovered_204
  • Duration: 3h 27m
  • Data Points: 17 AIS positions
  • Period: 2026-07-15T06:36:25+00:00 to 2026-07-15T10:03:29+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 207.099999999999994315658113919198513031005859375,
    "points_in_zone": 17,
    "first_point": {
        "ts": "2026-07-15T06:36:25+00:00",
        "lat": 37.26983500000000049112713895738124847412109375,
        "lon": 5.2549633000000000038198777474462985992431640625
    },
    "last_point": {
        "ts": "2026-07-15T10:03:29+00:00",
        "lat": 37.26435330000000334393917000852525234222412109375,
        "lon": 5.24912829999999974717184159089811146259307861328125
    }
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 15, 2026 06:36 UTC 75.0%
  • Duration: 3h 27m
  • Radius: 602 meters
  • Data Points: 17 AIS positions
  • Centroid: 37.2683, 5.2485
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 601.799999999999954525264911353588104248046875,
    "duration_minutes": 207.099999999999994315658113919198513031005859375,
    "points": 17,
    "centroid": {
        "lat": 37.26825893529411359850200824439525604248046875,
        "lon": 5.24847137647058747944583956268616020679473876953125
    },
    "bbox": {
        "min_lat": 37.26435330000000334393917000852525234222412109375,
        "min_lon": 5.24429669999999958918124320916831493377685546875,
        "max_lat": 37.26983500000000049112713895738124847412109375,
        "max_lon": 5.2549633000000000038198777474462985992431640625
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 15, 2026 05:02 UTC 80.0%
  • Zone: discovered_204
  • Duration: 5h 1m
  • Data Points: 28 AIS positions
  • Period: 2026-07-15T05:02:05+00:00 to 2026-07-15T10:03:29+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 301.3999999999999772626324556767940521240234375,
    "points_in_zone": 28,
    "first_point": {
        "ts": "2026-07-15T05:02:05+00:00",
        "lat": 37.2755982999999986304828780703246593475341796875,
        "lon": 5.2658483000000000373574948753230273723602294921875
    },
    "last_point": {
        "ts": "2026-07-15T10:03:29+00:00",
        "lat": 37.26435330000000334393917000852525234222412109375,
        "lon": 5.24912829999999974717184159089811146259307861328125
    }
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 15, 2026 05:02 UTC 75.0%
  • Duration: 5h 1m
  • Radius: 1,158 meters
  • Data Points: 28 AIS positions
  • Centroid: 37.2709, 5.2542
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 1158.200000000000045474735088646411895751953125,
    "duration_minutes": 301.3999999999999772626324556767940521240234375,
    "points": 28,
    "centroid": {
        "lat": 37.2708913821428495793952606618404388427734375,
        "lon": 5.25419298214285834802694807876832783222198486328125
    },
    "bbox": {
        "min_lat": 37.26435330000000334393917000852525234222412109375,
        "min_lon": 5.24429669999999958918124320916831493377685546875,
        "max_lat": 37.2755982999999986304828780703246593475341796875,
        "max_lon": 5.2658483000000000373574948753230273723602294921875
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 15, 2026 04:46 UTC 80.0%
  • Zone: discovered_204
  • Duration: 5h 16m
  • Data Points: 31 AIS positions
  • Period: 2026-07-15T04:46:44+00:00 to 2026-07-15T10:03:29+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 316.80000000000001136868377216160297393798828125,
    "points_in_zone": 31,
    "first_point": {
        "ts": "2026-07-15T04:46:44+00:00",
        "lat": 37.276015000000001009539118967950344085693359375,
        "lon": 5.2680150000000001142552719102241098880767822265625
    },
    "last_point": {
        "ts": "2026-07-15T10:03:29+00:00",
        "lat": 37.26435330000000334393917000852525234222412109375,
        "lon": 5.24912829999999974717184159089811146259307861328125
    }
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 15, 2026 04:46 UTC 75.0%
  • Duration: 2h 20m
  • Radius: 1,106 meters
  • Data Points: 20 AIS positions
  • Centroid: 37.2733, 5.2605
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 1105.59999999999990905052982270717620849609375,
    "duration_minutes": 140.099999999999994315658113919198513031005859375,
    "points": 20,
    "centroid": {
        "lat": 37.27325809000000589321643928997218608856201171875,
        "lon": 5.2605350850000007767448551021516323089599609375
    },
    "bbox": {
        "min_lat": 37.26815500000000014324541552923619747161865234375,
        "min_lon": 5.24983000000000021856294551980681717395782470703125,
        "max_lat": 37.276015000000001009539118967950344085693359375,
        "max_lon": 5.2680150000000001142552719102241098880767822265625
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 15, 2026 03:04 UTC 80.0%
  • Zone: discovered_204
  • Duration: 1h 34m
  • Data Points: 21 AIS positions
  • Period: 2026-07-15T03:04:34+00:00 to 2026-07-15T04:38:44+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 94.2000000000000028421709430404007434844970703125,
    "points_in_zone": 21,
    "first_point": {
        "ts": "2026-07-15T03:04:34+00:00",
        "lat": 37.28175329999999831898094271309673786163330078125,
        "lon": 5.2868683000000000760110197006724774837493896484375
    },
    "last_point": {
        "ts": "2026-07-15T04:38:44+00:00",
        "lat": 37.2762349999999997862687450833618640899658203125,
        "lon": 5.269211699999999609644873999059200286865234375
    }
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 15, 2026 03:04 UTC 75.0%
  • Duration: 1h 34m
  • Radius: 914 meters
  • Data Points: 21 AIS positions
  • Centroid: 37.2790, 5.2789
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 913.5,
    "duration_minutes": 94.2000000000000028421709430404007434844970703125,
    "points": 21,
    "centroid": {
        "lat": 37.27898546666667556337415589950978755950927734375,
        "lon": 5.27891951904761835834278826951049268245697021484375
    },
    "bbox": {
        "min_lat": 37.2762349999999997862687450833618640899658203125,
        "min_lon": 5.269211699999999609644873999059200286865234375,
        "max_lat": 37.28175329999999831898094271309673786163330078125,
        "max_lon": 5.2868683000000000760110197006724774837493896484375
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 15, 2026 02:01 UTC 80.0%
  • Zone: discovered_204
  • Duration: 2h 37m
  • Data Points: 29 AIS positions
  • Period: 2026-07-15T02:01:24+00:00 to 2026-07-15T04:38:44+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 157.30000000000001136868377216160297393798828125,
    "points_in_zone": 29,
    "first_point": {
        "ts": "2026-07-15T02:01:24+00:00",
        "lat": 37.28786670000000214031388168223202228546142578125,
        "lon": 5.2936832999999996474116414901800453662872314453125
    },
    "last_point": {
        "ts": "2026-07-15T04:38:44+00:00",
        "lat": 37.2762349999999997862687450833618640899658203125,
        "lon": 5.269211699999999609644873999059200286865234375
    }
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 15, 2026 02:01 UTC 75.0%
  • Duration: 2h 8m
  • Radius: 1,129 meters
  • Data Points: 26 AIS positions
  • Centroid: 37.2799, 5.2811
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 1129.299999999999954525264911353588104248046875,
    "duration_minutes": 128.30000000000001136868377216160297393798828125,
    "points": 26,
    "centroid": {
        "lat": 37.2799131961538563473368412815034389495849609375,
        "lon": 5.28108377692307495721024679369293153285980224609375
    },
    "bbox": {
        "min_lat": 37.2762349999999997862687450833618640899658203125,
        "min_lon": 5.269211699999999609644873999059200286865234375,
        "max_lat": 37.28493830000000031077433959580957889556884765625,
        "max_lon": 5.29152169999999966165660225669853389263153076171875
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 15, 2026 01:03 UTC 80.0%
  • Zone: discovered_204
  • Duration: 3h 35m
  • Data Points: 39 AIS positions
  • Period: 2026-07-15T01:03:14+00:00 to 2026-07-15T04:38:44+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 215.5,
    "points_in_zone": 39,
    "first_point": {
        "ts": "2026-07-15T01:03:14+00:00",
        "lat": 37.29070999999999713736542616970837116241455078125,
        "lon": 5.2969217000000003991999619756825268268585205078125
    },
    "last_point": {
        "ts": "2026-07-15T04:38:44+00:00",
        "lat": 37.2762349999999997862687450833618640899658203125,
        "lon": 5.269211699999999609644873999059200286865234375
    }
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 15, 2026 01:03 UTC 75.0%
  • Duration: 2h 20m
  • Radius: 1,128 meters
  • Data Points: 27 AIS positions
  • Centroid: 37.2822, 5.2856
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 1128.299999999999954525264911353588104248046875,
    "duration_minutes": 140.69999999999998863131622783839702606201171875,
    "points": 27,
    "centroid": {
        "lat": 37.28218783703704275467316620051860809326171875,
        "lon": 5.2855926444444438772052308195270597934722900390625
    },
    "bbox": {
        "min_lat": 37.27718329999999724577719462104141712188720703125,
        "min_lon": 5.274518300000000436966729466803371906280517578125,
        "max_lat": 37.28875000000000028421709430404007434844970703125,
        "max_lon": 5.2942499999999999005240169935859739780426025390625
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 15, 2026 00:03 UTC 80.0%
  • Zone: discovered_204
  • Duration: 4h 35m
  • Data Points: 54 AIS positions
  • Period: 2026-07-15T00:03:11+00:00 to 2026-07-15T04:38:44+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 275.6000000000000227373675443232059478759765625,
    "points_in_zone": 54,
    "first_point": {
        "ts": "2026-07-15T00:03:11+00:00",
        "lat": 37.2893499999999988858689903281629085540771484375,
        "lon": 5.296498299999999659348759450949728488922119140625
    },
    "last_point": {
        "ts": "2026-07-15T04:38:44+00:00",
        "lat": 37.2762349999999997862687450833618640899658203125,
        "lon": 5.269211699999999609644873999059200286865234375
    }
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 15, 2026 00:03 UTC 75.0%
  • Duration: 2h 53m
  • Radius: 1,162 meters
  • Data Points: 32 AIS positions
  • Centroid: 37.2857, 5.2907
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 1162.200000000000045474735088646411895751953125,
    "duration_minutes": 173,
    "points": 32,
    "centroid": {
        "lat": 37.2856991156249932828359305858612060546875,
        "lon": 5.2907205656249995939788277610205113887786865234375
    },
    "bbox": {
        "min_lat": 37.27939500000000094814822659827768802642822265625,
        "min_lon": 5.28025669999999980319671522011049091815948486328125,
        "max_lat": 37.29075999999999879719325690530240535736083984375,
        "max_lon": 5.2974233000000001680973582551814615726470947265625
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 14, 2026 23:32 UTC 75.0%
  • Duration: 4h 17m
  • Radius: 1,144 meters
  • Data Points: 49 AIS positions
  • Centroid: 37.2874, 5.2940
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 1144.299999999999954525264911353588104248046875,
    "duration_minutes": 257.1000000000000227373675443232059478759765625,
    "points": 49,
    "centroid": {
        "lat": 37.28741014285714072684640996158123016357421875,
        "lon": 5.29403441632653137816078015021048486232757568359375
    },
    "bbox": {
        "min_lat": 37.280844999999999345163814723491668701171875,
        "min_lon": 5.28408500000000014296119843493215739727020263671875,
        "max_lat": 37.29075999999999879719325690530240535736083984375,
        "max_lon": 5.29756499999999963534946800791658461093902587890625
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 14, 2026 23:02 UTC 80.0%
  • Zone: discovered_204
  • Duration: 5h 36m
  • Data Points: 66 AIS positions
  • Period: 2026-07-14T23:02:11+00:00 to 2026-07-15T04:38:44+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 336.6000000000000227373675443232059478759765625,
    "points_in_zone": 66,
    "first_point": {
        "ts": "2026-07-14T23:02:11+00:00",
        "lat": 37.2813450000000017325874068774282932281494140625,
        "lon": 5.2908182999999997520035321940667927265167236328125
    },
    "last_point": {
        "ts": "2026-07-15T04:38:44+00:00",
        "lat": 37.2762349999999997862687450833618640899658203125,
        "lon": 5.269211699999999609644873999059200286865234375
    }
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 14, 2026 22:13 UTC 75.0%
  • Duration: 5h 37m
  • Radius: 1,788 meters
  • Data Points: 68 AIS positions
  • Centroid: 37.2845, 5.2918
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 1787.59999999999990905052982270717620849609375,
    "duration_minutes": 337.19999999999998863131622783839702606201171875,
    "points": 68,
    "centroid": {
        "lat": 37.28453267647059732325942604802548885345458984375,
        "lon": 5.29179077647058893063558571157045662403106689453125
    },
    "bbox": {
        "min_lat": 37.2691200000000009140421752817928791046142578125,
        "min_lon": 5.28025669999999980319671522011049091815948486328125,
        "max_lat": 37.29075999999999879719325690530240535736083984375,
        "max_lon": 5.29756499999999963534946800791658461093902587890625
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 14, 2026 22:03 UTC 80.0%
  • Zone: discovered_204
  • Duration: 6h 35m
  • Data Points: 79 AIS positions
  • Period: 2026-07-14T22:03:29+00:00 to 2026-07-15T04:38:44+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 395.19999999999998863131622783839702606201171875,
    "points_in_zone": 79,
    "first_point": {
        "ts": "2026-07-14T22:03:29+00:00",
        "lat": 37.2691200000000009140421752817928791046142578125,
        "lon": 5.2859350000000002722799763432703912258148193359375
    },
    "last_point": {
        "ts": "2026-07-15T04:38:44+00:00",
        "lat": 37.2762349999999997862687450833618640899658203125,
        "lon": 5.269211699999999609644873999059200286865234375
    }
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 14, 2026 21:13 UTC 75.0%
  • Duration: 1h 42m
  • Radius: 1,333 meters
  • Data Points: 22 AIS positions
  • Centroid: 37.2756, 5.2885
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 1333.40000000000009094947017729282379150390625,
    "duration_minutes": 102.5,
    "points": 22,
    "centroid": {
        "lat": 37.27563227727272732181518222205340862274169921875,
        "lon": 5.288525899999999779765857965685427188873291015625
    },
    "bbox": {
        "min_lat": 37.2636667000000016969352145679295063018798828125,
        "min_lon": 5.2859350000000002722799763432703912258148193359375,
        "max_lat": 37.284521699999999100327841006219387054443359375,
        "max_lon": 5.29290000000000038227199183893389999866485595703125
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 14, 2026 21:03 UTC 80.0%
  • Zone: discovered_204
  • Duration: 6h 37m
  • Data Points: 80 AIS positions
  • Period: 2026-07-14T21:50:59+00:00 to 2026-07-15T04:28:36+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 397.6000000000000227373675443232059478759765625,
    "points_in_zone": 80,
    "first_point": {
        "ts": "2026-07-14T21:50:59+00:00",
        "lat": 37.26662329999999911933628027327358722686767578125,
        "lon": 5.2862416999999997102577253826893866062164306640625
    },
    "last_point": {
        "ts": "2026-07-15T04:28:36+00:00",
        "lat": 37.2765332999999969842974678613245487213134765625,
        "lon": 5.27104999999999979110043568653054535388946533203125
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 14, 2026 20:03 UTC 80.0%
  • Zone: discovered_204
  • Duration: 6h 36m
  • Data Points: 79 AIS positions
  • Period: 2026-07-14T20:50:30+00:00 to 2026-07-15T03:26:33+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 396.1000000000000227373675443232059478759765625,
    "points_in_zone": 79,
    "first_point": {
        "ts": "2026-07-14T20:50:30+00:00",
        "lat": 37.24943170000000236541382037103176116943359375,
        "lon": 5.288026699999999635792846675030887126922607421875
    },
    "last_point": {
        "ts": "2026-07-15T03:26:33+00:00",
        "lat": 37.28041329999999931033016764558851718902587890625,
        "lon": 5.282714999999999605506673105992376804351806640625
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 14, 2026 19:03 UTC 80.0%
  • Zone: discovered_204
  • Duration: 6h 28m
  • Data Points: 79 AIS positions
  • Period: 2026-07-14T19:57:09+00:00 to 2026-07-15T02:25:43+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 388.6000000000000227373675443232059478759765625,
    "points_in_zone": 79,
    "first_point": {
        "ts": "2026-07-14T19:57:09+00:00",
        "lat": 37.231009999999997717168298549950122833251953125,
        "lon": 5.28793670000000037845211409148760139942169189453125
    },
    "last_point": {
        "ts": "2026-07-15T02:25:43+00:00",
        "lat": 37.28549670000000304526110994629561901092529296875,
        "lon": 5.29196500000000025210056264768354594707489013671875
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 14, 2026 18:02 UTC 80.0%
  • Zone: discovered_204
  • Duration: 6h 32m
  • Data Points: 83 AIS positions
  • Period: 2026-07-14T18:52:18+00:00 to 2026-07-15T01:25:04+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 392.80000000000001136868377216160297393798828125,
    "points_in_zone": 83,
    "first_point": {
        "ts": "2026-07-14T18:52:18+00:00",
        "lat": 37.21335669999999851143002160824835300445556640625,
        "lon": 5.2912917000000003753257260541431605815887451171875
    },
    "last_point": {
        "ts": "2026-07-15T01:25:04+00:00",
        "lat": 37.29020669999999881838448345661163330078125,
        "lon": 5.29567000000000032144953365786932408809661865234375
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 14, 2026 17:09 UTC 80.0%
  • Zone: discovered_204
  • Duration: 6h 35m
  • Data Points: 87 AIS positions
  • Period: 2026-07-14T17:52:57+00:00 to 2026-07-15T00:28:10+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 395.19999999999998863131622783839702606201171875,
    "points_in_zone": 87,
    "first_point": {
        "ts": "2026-07-14T17:52:57+00:00",
        "lat": 37.20108499999999907004166743718087673187255859375,
        "lon": 5.293163299999999793499227962456643581390380859375
    },
    "last_point": {
        "ts": "2026-07-15T00:28:10+00:00",
        "lat": 37.29046170000000159916453412733972072601318359375,
        "lon": 5.29746670000000019484787117107771337032318115234375
    }
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 14, 2026 17:09 UTC 75.0%
  • Duration: 1h 42m
  • Radius: 1,268 meters
  • Data Points: 24 AIS positions
  • Centroid: 37.2088, 5.2919
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 1267.90000000000009094947017729282379150390625,
    "duration_minutes": 102,
    "points": 24,
    "centroid": {
        "lat": 37.2088303458333342632613494060933589935302734375,
        "lon": 5.29187701666666665545335490605793893337249755859375
    },
    "bbox": {
        "min_lat": 37.1975867000000022244421415962278842926025390625,
        "min_lon": 5.2905417000000003469040166237391531467437744140625,
        "max_lat": 37.2185733000000027459464035928249359130859375,
        "max_lon": 5.29441000000000006053824108676053583621978759765625
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 14, 2026 16:10 UTC 80.0%
  • Zone: discovered_204
  • Duration: 6h 37m
  • Data Points: 83 AIS positions
  • Period: 2026-07-14T16:41:37+00:00 to 2026-07-14T23:19:31+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 397.8999999999999772626324556767940521240234375,
    "points_in_zone": 83,
    "first_point": {
        "ts": "2026-07-14T16:41:37+00:00",
        "lat": 37.190218299999997952909325249493122100830078125,
        "lon": 5.29860169999999985890326570370234549045562744140625
    },
    "last_point": {
        "ts": "2026-07-14T23:19:31+00:00",
        "lat": 37.284521699999999100327841006219387054443359375,
        "lon": 5.29290000000000038227199183893389999866485595703125
    }
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 14, 2026 16:10 UTC 75.0%
  • Duration: 1h 51m
  • Radius: 1,149 meters
  • Data Points: 23 AIS positions
  • Centroid: 37.2020, 5.2935
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 1149.40000000000009094947017729282379150390625,
    "duration_minutes": 111,
    "points": 23,
    "centroid": {
        "lat": 37.20198390869564519789491896517574787139892578125,
        "lon": 5.2934658782608696725446861819364130496978759765625
    },
    "bbox": {
        "min_lat": 37.1921133000000025958797778002917766571044921875,
        "min_lon": 5.29144170000000002573870006017386913299560546875,
        "max_lat": 37.2115849999999994679455994628369808197021484375,
        "max_lon": 5.29738669999999967075154927442781627178192138671875
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 14, 2026 15:56 UTC 80.0%
  • Zone: discovered_204
  • Duration: 6h 30m
  • Data Points: 76 AIS positions
  • Period: 2026-07-14T15:56:36+00:00 to 2026-07-14T22:26:41+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 390.1000000000000227373675443232059478759765625,
    "points_in_zone": 76,
    "first_point": {
        "ts": "2026-07-14T15:56:36+00:00",
        "lat": 37.18452169999999767924236948601901531219482421875,
        "lon": 5.3038483000000002931528797489590942859649658203125
    },
    "last_point": {
        "ts": "2026-07-14T22:26:41+00:00",
        "lat": 37.27429000000000058889781939797103404998779296875,
        "lon": 5.2871132999999996826545611838810145854949951171875
    }
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 14, 2026 15:56 UTC 75.0%
  • Duration: 2h 5m
  • Radius: 1,160 meters
  • Data Points: 20 AIS positions
  • Centroid: 37.1935, 5.2971
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 1160.200000000000045474735088646411895751953125,
    "duration_minutes": 125.7000000000000028421709430404007434844970703125,
    "points": 20,
    "centroid": {
        "lat": 37.1934809199999989459684002213180065155029296875,
        "lon": 5.29711484500000029385091693256981670856475830078125
    },
    "bbox": {
        "min_lat": 37.18452169999999767924236948601901531219482421875,
        "min_lon": 5.29274169999999966051973387948237359523773193359375,
        "max_lat": 37.20268999999999692818164476193487644195556640625,
        "max_lon": 5.3038483000000002931528797489590942859649658203125
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 13, 2026 19:03 UTC 80.0%
  • Zone: discovered_204
  • Duration: 1h 1m
  • Data Points: 13 AIS positions
  • Period: 2026-07-13T19:03:35+00:00 to 2026-07-13T20:05:04+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 61.5,
    "points_in_zone": 13,
    "first_point": {
        "ts": "2026-07-13T19:03:35+00:00",
        "lat": 37.14560329999999765959728392772376537322998046875,
        "lon": 5.2910532999999997372242432902567088603973388671875
    },
    "last_point": {
        "ts": "2026-07-13T20:05:04+00:00",
        "lat": 37.1533850000000001045918907038867473602294921875,
        "lon": 5.2869849999999996015276337857358157634735107421875
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 13, 2026 18:18 UTC 80.0%
  • Zone: discovered_204
  • Duration: 1h 47m
  • Data Points: 19 AIS positions
  • Period: 2026-07-13T18:18:03+00:00 to 2026-07-13T20:05:04+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 107,
    "points_in_zone": 19,
    "first_point": {
        "ts": "2026-07-13T18:18:03+00:00",
        "lat": 37.14096500000000133923094836063683032989501953125,
        "lon": 5.2939667000000003582727003959007561206817626953125
    },
    "last_point": {
        "ts": "2026-07-13T20:05:04+00:00",
        "lat": 37.1533850000000001045918907038867473602294921875,
        "lon": 5.2869849999999996015276337857358157634735107421875
    }
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 13, 2026 18:18 UTC 75.0%
  • Duration: 1h 47m
  • Radius: 804 meters
  • Data Points: 19 AIS positions
  • Centroid: 37.1475, 5.2902
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 803.5,
    "duration_minutes": 107,
    "points": 19,
    "centroid": {
        "lat": 37.14754578421052855219386401586234569549560546875,
        "lon": 5.29019605789473690293789331917650997638702392578125
    },
    "bbox": {
        "min_lat": 37.14096500000000133923094836063683032989501953125,
        "min_lon": 5.2869849999999996015276337857358157634735107421875,
        "max_lat": 37.1533850000000001045918907038867473602294921875,
        "max_lon": 5.2939667000000003582727003959007561206817626953125
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 13, 2026 17:03 UTC 80.0%
  • Zone: discovered_204
  • Duration: 3h 2m
  • Data Points: 21 AIS positions
  • Period: 2026-07-13T17:03:03+00:00 to 2026-07-13T20:05:04+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 182,
    "points_in_zone": 21,
    "first_point": {
        "ts": "2026-07-13T17:03:03+00:00",
        "lat": 37.140213299999999208012013696134090423583984375,
        "lon": 5.297193299999999993588062352500855922698974609375
    },
    "last_point": {
        "ts": "2026-07-13T20:05:04+00:00",
        "lat": 37.1533850000000001045918907038867473602294921875,
        "lon": 5.2869849999999996015276337857358157634735107421875
    }
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 13, 2026 17:03 UTC 75.0%
  • Duration: 3h 2m
  • Radius: 930 meters
  • Data Points: 21 AIS positions
  • Centroid: 37.1468, 5.2908
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 930,
    "duration_minutes": 182,
    "points": 21,
    "centroid": {
        "lat": 37.14683451904762279127680812962353229522705078125,
        "lon": 5.29077714761904704943162869312800467014312744140625
    },
    "bbox": {
        "min_lat": 37.13994170000000138998075271956622600555419921875,
        "min_lon": 5.2869849999999996015276337857358157634735107421875,
        "max_lat": 37.1533850000000001045918907038867473602294921875,
        "max_lon": 5.297193299999999993588062352500855922698974609375
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 13, 2026 16:08 UTC 80.0%
  • Zone: discovered_204
  • Duration: 3h 57m
  • Data Points: 30 AIS positions
  • Period: 2026-07-13T16:08:03+00:00 to 2026-07-13T20:05:04+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 237,
    "points_in_zone": 30,
    "first_point": {
        "ts": "2026-07-13T16:08:03+00:00",
        "lat": 37.1419700000000005957190296612679958343505859375,
        "lon": 5.2983966999999996261294654686935245990753173828125
    },
    "last_point": {
        "ts": "2026-07-13T20:05:04+00:00",
        "lat": 37.1533850000000001045918907038867473602294921875,
        "lon": 5.2869849999999996015276337857358157634735107421875
    }
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 13, 2026 16:08 UTC 75.0%
  • Duration: 3h 57m
  • Radius: 1,061 meters
  • Data Points: 30 AIS positions
  • Centroid: 37.1451, 5.2929
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 1061.09999999999990905052982270717620849609375,
    "duration_minutes": 237,
    "points": 30,
    "centroid": {
        "lat": 37.1450938299999933178696664981544017791748046875,
        "lon": 5.29293400666666702392149090883322060108184814453125
    },
    "bbox": {
        "min_lat": 37.13994170000000138998075271956622600555419921875,
        "min_lon": 5.2869849999999996015276337857358157634735107421875,
        "max_lat": 37.1533850000000001045918907038867473602294921875,
        "max_lon": 5.2984632999999998759221853106282651424407958984375
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 13, 2026 14:33 UTC 80.0%
  • Zone: discovered_204
  • Duration: 5h 31m
  • Data Points: 31 AIS positions
  • Period: 2026-07-13T14:33:32+00:00 to 2026-07-13T20:05:04+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 331.5,
    "points_in_zone": 31,
    "first_point": {
        "ts": "2026-07-13T14:33:32+00:00",
        "lat": 37.1440417000000024927430786192417144775390625,
        "lon": 5.294850000000000278532752417959272861480712890625
    },
    "last_point": {
        "ts": "2026-07-13T20:05:04+00:00",
        "lat": 37.1533850000000001045918907038867473602294921875,
        "lon": 5.2869849999999996015276337857358157634735107421875
    }
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 13, 2026 14:33 UTC 75.0%
  • Duration: 5h 31m
  • Radius: 1,067 meters
  • Data Points: 31 AIS positions
  • Centroid: 37.1451, 5.2930
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 1067.09999999999990905052982270717620849609375,
    "duration_minutes": 331.5,
    "points": 31,
    "centroid": {
        "lat": 37.14505989032257815551929525099694728851318359375,
        "lon": 5.2929958129032268487890178221277892589569091796875
    },
    "bbox": {
        "min_lat": 37.13994170000000138998075271956622600555419921875,
        "min_lon": 5.2869849999999996015276337857358157634735107421875,
        "max_lat": 37.1533850000000001045918907038867473602294921875,
        "max_lon": 5.2984632999999998759221853106282651424407958984375
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 13, 2026 06:06 UTC 80.0%
  • Zone: discovered_204
  • Duration: 1 hours
  • Data Points: 9 AIS positions
  • Period: 2026-07-13T06:06:37+00:00 to 2026-07-13T07:07:27+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 60.7999999999999971578290569595992565155029296875,
    "points_in_zone": 9,
    "first_point": {
        "ts": "2026-07-13T06:06:37+00:00",
        "lat": 37.16403170000000244499460677616298198699951171875,
        "lon": 5.16755500000000012050804798491299152374267578125
    },
    "last_point": {
        "ts": "2026-07-13T07:07:27+00:00",
        "lat": 37.17048170000000339996404363773763179779052734375,
        "lon": 5.19500000000000028421709430404007434844970703125
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 13, 2026 04:04 UTC 80.0%
  • Zone: discovered_204
  • Duration: 3h 2m
  • Data Points: 11 AIS positions
  • Period: 2026-07-13T04:04:53+00:00 to 2026-07-13T07:07:27+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 182.599999999999994315658113919198513031005859375,
    "points_in_zone": 11,
    "first_point": {
        "ts": "2026-07-13T04:04:53+00:00",
        "lat": 37.15119829999999723213477409444749355316162109375,
        "lon": 5.128453300000000325553628499619662761688232421875
    },
    "last_point": {
        "ts": "2026-07-13T07:07:27+00:00",
        "lat": 37.17048170000000339996404363773763179779052734375,
        "lon": 5.19500000000000028421709430404007434844970703125
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 13, 2026 03:05 UTC 80.0%
  • Zone: discovered_204
  • Duration: 4h 2m
  • Data Points: 18 AIS positions
  • Period: 2026-07-13T03:05:05+00:00 to 2026-07-13T07:07:27+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 242.400000000000005684341886080801486968994140625,
    "points_in_zone": 18,
    "first_point": {
        "ts": "2026-07-13T03:05:05+00:00",
        "lat": 37.1439400000000006230038707144558429718017578125,
        "lon": 5.131441699999999883630152908153831958770751953125
    },
    "last_point": {
        "ts": "2026-07-13T07:07:27+00:00",
        "lat": 37.17048170000000339996404363773763179779052734375,
        "lon": 5.19500000000000028421709430404007434844970703125
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 13, 2026 02:03 UTC 80.0%
  • Zone: discovered_204
  • Duration: 5h 4m
  • Data Points: 25 AIS positions
  • Period: 2026-07-13T02:03:14+00:00 to 2026-07-13T07:07:27+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 304.19999999999998863131622783839702606201171875,
    "points_in_zone": 25,
    "first_point": {
        "ts": "2026-07-13T02:03:14+00:00",
        "lat": 37.13699669999999741776264272630214691162109375,
        "lon": 5.13426999999999988943955031572841107845306396484375
    },
    "last_point": {
        "ts": "2026-07-13T07:07:27+00:00",
        "lat": 37.17048170000000339996404363773763179779052734375,
        "lon": 5.19500000000000028421709430404007434844970703125
    }
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 13, 2026 02:03 UTC 75.0%
  • Duration: 2h 3m
  • Radius: 870 meters
  • Data Points: 16 AIS positions
  • Centroid: 37.1439, 5.1314
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 870.200000000000045474735088646411895751953125,
    "duration_minutes": 123.7999999999999971578290569595992565155029296875,
    "points": 16,
    "centroid": {
        "lat": 37.1439360437500027956048143096268177032470703125,
        "lon": 5.1313678249999998826069713686592876911163330078125
    },
    "bbox": {
        "min_lat": 37.13699669999999741776264272630214691162109375,
        "min_lon": 5.12840499999999988034460329799912869930267333984375,
        "max_lat": 37.15140999999999849023879505693912506103515625,
        "max_lon": 5.13426999999999988943955031572841107845306396484375
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 13, 2026 01:43 UTC 75.0%
  • Duration: 2h 23m
  • Radius: 1,065 meters
  • Data Points: 20 AIS positions
  • Centroid: 37.1423, 5.1320
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 1065.200000000000045474735088646411895751953125,
    "duration_minutes": 143.30000000000001136868377216160297393798828125,
    "points": 20,
    "centroid": {
        "lat": 37.14225291499999315192326321266591548919677734375,
        "lon": 5.131996595000000382924554287455976009368896484375
    },
    "bbox": {
        "min_lat": 37.13460500000000052978066378273069858551025390625,
        "min_lon": 5.12840499999999988034460329799912869930267333984375,
        "max_lat": 37.15140999999999849023879505693912506103515625,
        "max_lon": 5.134705000000000296722646453417837619781494140625
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 13, 2026 01:43 UTC 80.0%
  • Zone: discovered_204
  • Duration: 5h 23m
  • Data Points: 29 AIS positions
  • Period: 2026-07-13T01:43:43+00:00 to 2026-07-13T07:07:27+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 323.69999999999998863131622783839702606201171875,
    "points_in_zone": 29,
    "first_point": {
        "ts": "2026-07-13T01:43:43+00:00",
        "lat": 37.13460500000000052978066378273069858551025390625,
        "lon": 5.134705000000000296722646453417837619781494140625
    },
    "last_point": {
        "ts": "2026-07-13T07:07:27+00:00",
        "lat": 37.17048170000000339996404363773763179779052734375,
        "lon": 5.19500000000000028421709430404007434844970703125
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 13, 2026 00:01 UTC 80.0%
  • Zone: discovered_204
  • Duration: 6h 31m
  • Data Points: 28 AIS positions
  • Period: 2026-07-13T00:16:32+00:00 to 2026-07-13T06:47:47+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 391.19999999999998863131622783839702606201171875,
    "points_in_zone": 28,
    "first_point": {
        "ts": "2026-07-13T00:16:32+00:00",
        "lat": 37.124245000000001937223714776337146759033203125,
        "lon": 5.139450000000000073896444519050419330596923828125
    },
    "last_point": {
        "ts": "2026-07-13T06:47:47+00:00",
        "lat": 37.16802500000000009094947017729282379150390625,
        "lon": 5.18621670000000012379359759506769478321075439453125
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 12, 2026 23:02 UTC 80.0%
  • Zone: discovered_204
  • Duration: 6h 39m
  • Data Points: 31 AIS positions
  • Period: 2026-07-12T23:40:04+00:00 to 2026-07-13T06:19:26+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 399.3999999999999772626324556767940521240234375,
    "points_in_zone": 31,
    "first_point": {
        "ts": "2026-07-12T23:40:04+00:00",
        "lat": 37.11986830000000026075213099829852581024169921875,
        "lon": 5.139913299999999907186065684072673320770263671875
    },
    "last_point": {
        "ts": "2026-07-13T06:19:26+00:00",
        "lat": 37.16583829999999721849235356785356998443603515625,
        "lon": 5.1731733000000001965190676855854690074920654296875
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 12, 2026 22:04 UTC 80.0%
  • Zone: discovered_204
  • Duration: 6h 2m
  • Data Points: 43 AIS positions
  • Period: 2026-07-12T22:04:11+00:00 to 2026-07-13T04:07:04+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 362.8999999999999772626324556767940521240234375,
    "points_in_zone": 43,
    "first_point": {
        "ts": "2026-07-12T22:04:11+00:00",
        "lat": 37.11070000000000135287336888723075389862060546875,
        "lon": 5.14844170000000023179609343060292303562164306640625
    },
    "last_point": {
        "ts": "2026-07-13T04:07:04+00:00",
        "lat": 37.15140999999999849023879505693912506103515625,
        "lon": 5.12840499999999988034460329799912869930267333984375
    }
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 12, 2026 22:04 UTC 75.0%
  • Duration: 2h 12m
  • Radius: 908 meters
  • Data Points: 23 AIS positions
  • Centroid: 37.1165, 5.1429
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 908.1000000000000227373675443232059478759765625,
    "duration_minutes": 132.30000000000001136868377216160297393798828125,
    "points": 23,
    "centroid": {
        "lat": 37.11653216521739295785664580762386322021484375,
        "lon": 5.1428615913043476126631503575481474399566650390625
    },
    "bbox": {
        "min_lat": 37.11070000000000135287336888723075389862060546875,
        "min_lon": 5.139450000000000073896444519050419330596923828125,
        "max_lat": 37.124245000000001937223714776337146759033203125,
        "max_lon": 5.14844170000000023179609343060292303562164306640625
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 12, 2026 21:06 UTC 75.0%
  • Duration: 3h 9m
  • Radius: 1,431 meters
  • Data Points: 27 AIS positions
  • Centroid: 37.1154, 5.1443
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 1431.40000000000009094947017729282379150390625,
    "duration_minutes": 189.900000000000005684341886080801486968994140625,
    "points": 27,
    "centroid": {
        "lat": 37.115422088888891494207200594246387481689453125,
        "lon": 5.14425351851851786477709538303315639495849609375
    },
    "bbox": {
        "min_lat": 37.1072233000000011315933079458773136138916015625,
        "min_lon": 5.139450000000000073896444519050419330596923828125,
        "max_lat": 37.124245000000001937223714776337146759033203125,
        "max_lon": 5.15668500000000040728309613768942654132843017578125
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 12, 2026 21:06 UTC 80.0%
  • Zone: discovered_204
  • Duration: 6h 27m
  • Data Points: 46 AIS positions
  • Period: 2026-07-12T21:39:21+00:00 to 2026-07-13T04:07:04+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 387.69999999999998863131622783839702606201171875,
    "points_in_zone": 46,
    "first_point": {
        "ts": "2026-07-12T21:39:21+00:00",
        "lat": 37.10915829999999715482772444374859333038330078125,
        "lon": 5.151991699999999951842255541123449802398681640625
    },
    "last_point": {
        "ts": "2026-07-13T04:07:04+00:00",
        "lat": 37.15140999999999849023879505693912506103515625,
        "lon": 5.12840499999999988034460329799912869930267333984375
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 12, 2026 18:16 UTC 80.0%
  • Zone: discovered_204
  • Duration: 5h 59m
  • Data Points: 36 AIS positions
  • Period: 2026-07-12T18:16:38+00:00 to 2026-07-13T00:16:32+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 359.8999999999999772626324556767940521240234375,
    "points_in_zone": 36,
    "first_point": {
        "ts": "2026-07-12T18:16:38+00:00",
        "lat": 37.10478330000000113386704470030963420867919921875,
        "lon": 5.17912329999999965224333209334872663021087646484375
    },
    "last_point": {
        "ts": "2026-07-13T00:16:32+00:00",
        "lat": 37.124245000000001937223714776337146759033203125,
        "lon": 5.139450000000000073896444519050419330596923828125
    }
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 12, 2026 14:02 UTC 80.0%
  • Zone: discovered_204
  • Duration: 4h 54m
  • Data Points: 11 AIS positions
  • Period: 2026-07-12T14:02:15+00:00 to 2026-07-12T18:56:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 294.6000000000000227373675443232059478759765625,
    "points_in_zone": 11,
    "first_point": {
        "ts": "2026-07-12T14:02:15+00:00",
        "lat": 37.10187169999999667879819753579795360565185546875,
        "lon": 5.18509499999999956543206280912272632122039794921875
    },
    "last_point": {
        "ts": "2026-07-12T18:56:49+00:00",
        "lat": 37.10461000000000097998054116033017635345458984375,
        "lon": 5.17501169999999977022753228084184229373931884765625
    }
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 12, 2026 14:02 UTC 75.0%
  • Duration: 4h 54m
  • Radius: 646 meters
  • Data Points: 11 AIS positions
  • Centroid: 37.1042, 5.1785
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 646.200000000000045474735088646411895751953125,
    "duration_minutes": 294.6000000000000227373675443232059478759765625,
    "points": 11,
    "centroid": {
        "lat": 37.10416000000000025238477974198758602142333984375,
        "lon": 5.17846334545454478615056359558366239070892333984375
    },
    "bbox": {
        "min_lat": 37.10187169999999667879819753579795360565185546875,
        "min_lon": 5.17501169999999977022753228084184229373931884765625,
        "max_lat": 37.10478330000000113386704470030963420867919921875,
        "max_lon": 5.18535500000000038056668927310965955257415771484375
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 12, 2026 13:10 UTC 80.0%
  • Zone: discovered_204
  • Duration: 5h 46m
  • Data Points: 19 AIS positions
  • Period: 2026-07-12T13:10:25+00:00 to 2026-07-12T18:56:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 346.3999999999999772626324556767940521240234375,
    "points_in_zone": 19,
    "first_point": {
        "ts": "2026-07-12T13:10:25+00:00",
        "lat": 37.10087999999999652800397598184645175933837890625,
        "lon": 5.1855250000000001620037437533028423786163330078125
    },
    "last_point": {
        "ts": "2026-07-12T18:56:49+00:00",
        "lat": 37.10461000000000097998054116033017635345458984375,
        "lon": 5.17501169999999977022753228084184229373931884765625
    }
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 12, 2026 13:10 UTC 75.0%
  • Duration: 5h 46m
  • Radius: 595 meters
  • Data Points: 19 AIS positions
  • Centroid: 37.1029, 5.1813
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 595.1000000000000227373675443232059478759765625,
    "duration_minutes": 346.3999999999999772626324556767940521240234375,
    "points": 19,
    "centroid": {
        "lat": 37.10286991052631577758802450262010097503662109375,
        "lon": 5.181344742105263634357470436953008174896240234375
    },
    "bbox": {
        "min_lat": 37.10087999999999652800397598184645175933837890625,
        "min_lon": 5.17501169999999977022753228084184229373931884765625,
        "max_lat": 37.10478330000000113386704470030963420867919921875,
        "max_lon": 5.1855250000000001620037437533028423786163330078125
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 12, 2026 12:12 UTC 80.0%
  • Zone: discovered_204
  • Duration: 6h 30m
  • Data Points: 23 AIS positions
  • Period: 2026-07-12T12:26:44+00:00 to 2026-07-12T18:56:49+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 390.1000000000000227373675443232059478759765625,
    "points_in_zone": 23,
    "first_point": {
        "ts": "2026-07-12T12:26:44+00:00",
        "lat": 37.1009667000000007419657777063548564910888671875,
        "lon": 5.18439169999999993621031535440124571323394775390625
    },
    "last_point": {
        "ts": "2026-07-12T18:56:49+00:00",
        "lat": 37.10461000000000097998054116033017635345458984375,
        "lon": 5.17501169999999977022753228084184229373931884765625
    }
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 12, 2026 12:12 UTC 75.0%
  • Duration: 6h 30m
  • Radius: 658 meters
  • Data Points: 23 AIS positions
  • Centroid: 37.1025, 5.1819
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 657.6000000000000227373675443232059478759765625,
    "duration_minutes": 390.1000000000000227373675443232059478759765625,
    "points": 23,
    "centroid": {
        "lat": 37.1025357956521730784515966661274433135986328125,
        "lon": 5.18194181739130410591087638749741017818450927734375
    },
    "bbox": {
        "min_lat": 37.1008532999999971480065141804516315460205078125,
        "min_lon": 5.17501169999999977022753228084184229373931884765625,
        "max_lat": 37.10478330000000113386704470030963420867919921875,
        "max_lon": 5.1855250000000001620037437533028423786163330078125
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 12, 2026 11:00 UTC 80.0%
  • Zone: discovered_204
  • Duration: 6h 34m
  • Data Points: 20 AIS positions
  • Period: 2026-07-12T11:51:44+00:00 to 2026-07-12T18:26:29+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 394.80000000000001136868377216160297393798828125,
    "points_in_zone": 20,
    "first_point": {
        "ts": "2026-07-12T11:51:44+00:00",
        "lat": 37.1004616999999967674739309586584568023681640625,
        "lon": 5.18303169999999990835704011260531842708587646484375
    },
    "last_point": {
        "ts": "2026-07-12T18:26:29+00:00",
        "lat": 37.10464329999999932852006168104708194732666015625,
        "lon": 5.178181699999999665351424482651054859161376953125
    }
}
Methodology: 2026.01.18
Loiter discovered_204
Jul 12, 2026 11:00 UTC 75.0%
  • Duration: 6h 34m
  • Radius: 609 meters
  • Data Points: 20 AIS positions
  • Centroid: 37.1016, 5.1839
  • Zone: discovered_204
Show Raw Evidence JSON
{
    "radius_m": 609.200000000000045474735088646411895751953125,
    "duration_minutes": 394.80000000000001136868377216160297393798828125,
    "points": 20,
    "centroid": {
        "lat": 37.1016472499999991896402207203209400177001953125,
        "lon": 5.18392425500000086913132690824568271636962890625
    },
    "bbox": {
        "min_lat": 37.1004616999999967674739309586584568023681640625,
        "min_lon": 5.178181699999999665351424482651054859161376953125,
        "max_lat": 37.10478330000000113386704470030963420867919921875,
        "max_lon": 5.1855250000000001620037437533028423786163330078125
    },
    "zone_id": "discovered_204"
}
Methodology: 2026.01.18
Zone Dwell discovered_204
Jul 12, 2026 10:03 UTC 80.0%
  • Zone: discovered_204
  • Duration: 4h 8m
  • Data Points: 44 AIS positions
  • Period: 2026-07-12T10:03:23+00:00 to 2026-07-12T14:11:56+00:00
Show Raw Evidence JSON
{
    "zone_id": "discovered_204",
    "zone_name": "Central Iberian Sea Monitoring Zone",
    "dwell_minutes": 248.599999999999994315658113919198513031005859375,
    "points_in_zone": 44,
    "first_point": {
        "ts": "2026-07-12T10:03:23+00:00",
        "lat": 37.0956283000000013316821423359215259552001953125,
        "lon": 5.180086700000000377031028619967401027679443359375
    },
    "last_point": {
        "ts": "2026-07-12T14:11:56+00:00",
        "lat": 37.1023066999999997506165527738630771636962890625,
        "lon": 5.18535500000000038056668927310965955257415771484375
    }
}
Methodology: 2026.01.18

Recent Position Data

Time (UTC) Lat Lon Speed Course Zone
Aug 27 17:14 40.9835 28.9983 7.8 kn 10.8° Bosphorus/Dardanelles Approach
Aug 27 17:10 40.9744 28.9957 8.0 kn 12.2° Bosphorus/Dardanelles Approach
Aug 27 17:06 40.9663 28.9934 8.2 kn 11.5° Bosphorus/Dardanelles Approach
Aug 27 17:05 40.9640 28.9928 8.3 kn 11.9° Bosphorus/Dardanelles Approach
Aug 27 17:03 40.9583 28.9913 8.5 kn 10.6° Bosphorus/Dardanelles Approach
Aug 27 16:48 40.9230 28.9891 9.5 kn 342.4° Bosphorus/Dardanelles Approach
Aug 27 16:39 40.8991 28.9994 9.8 kn 339.9° Bosphorus/Dardanelles Approach
Aug 27 16:36 40.8930 29.0021 9.8 kn 341.5° Bosphorus/Dardanelles Approach
Aug 27 16:34 40.8878 29.0044 9.8 kn 337.1° Bosphorus/Dardanelles Approach
Aug 27 16:31 40.8798 29.0085 9.5 kn 339.6° Bosphorus/Dardanelles Approach
Aug 27 16:29 40.8743 29.0104 9.4 kn 1.6° Bosphorus/Dardanelles Approach
Aug 27 16:27 40.8690 29.0093 9.6 kn 9.6° Bosphorus/Dardanelles Approach
Aug 27 16:25 40.8646 29.0084 9.6 kn 7.9° Bosphorus/Dardanelles Approach
Aug 27 16:20 40.8501 29.0055 9.6 kn 9.5° Bosphorus/Dardanelles Approach
Aug 27 16:04 40.8076 28.9973 9.3 kn 5.6° Bosphorus/Dardanelles Approach
Aug 27 15:53 40.7910 29.0049 1.8 kn 304.7° Bosphorus/Dardanelles Approach
Aug 27 14:59 40.7957 29.0137 0.7 kn 225.3° Bosphorus/Dardanelles Approach
Aug 27 14:39 40.7986 29.0176 0.7 kn 228.0° Bosphorus/Dardanelles Approach
Aug 27 14:37 40.7990 29.0181 0.7 kn 234.5° Bosphorus/Dardanelles Approach
Aug 27 14:33 40.7994 29.0189 0.7 kn 228.3° Bosphorus/Dardanelles Approach

Showing 20 of 100 recent positions.

Data Source

Vessel observed through FleetLeaks' AIS monitoring system in zones of interest. Identity and position data derived from AIS broadcasts and public maritime databases.

Disclaimer: AIS data can be spoofed or falsified. Vessel identities should be independently verified before making compliance decisions.